Channeling-machine.



No. 792,287. PATENTED JUNE 13, 1905. W. PRELLWITZ.

OHANNELING MACHINE.

APPLICATION IILBD SEP'LZ, 1904.

2 SHEETS-SHEET 1 No, 792,287. PATENTED JUNE 13, 1905. W. PRELLWITZ.

GHANNELING MACHINE.

APPLICATION FILED SEPT. 2, 1904.

2 SHEETS-SHEET 2.

q. I i I J 2 55726 mew, j g f Patented June 13, 1905.

PATE T OFFICE.

WILLIAM PRELLWVITZ, OF EASTON,

INGERSOLL SERGEANT DRILL CORPORATION OF VEST VIRGINIA.

CHANNELlNG-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 792,287, dated June 13,1905. Applica ion filed September 2 1904. Serial No. 223,101.

To all whom, it may concern:

Be it known that 1, WILLIAM PRELLWITZ, a citizen of the United States,and a resident of Easton, in the county of Northampton and State ofPennsylvania, have invented a new and useful Channeling-Machine, ofwhich the following is a specification. I

My invention relates to channeling-machines, and more particularly tothe mechanism for feeding the drill to its work, the object being toremove the strain from the bevelgear and provide for taking up wearwithout affecting the meshing of said gear and to further provide foradjusting the operating-handle bodily in any desired position withrespect to the operator.

A practical embodiment of my invention is represented in theaccompanying drawings, in which Figure 1 is a view in side elevation ofthe upper part of the shell which supports the drill and its drivingmechanism with the feedscrew and its operating-gear in position as inuse. Fig. 2 is a vertical section of the same, and Fig. 3 is atransverse section in the plane of the line A A of Fig. l.

The shell is denoted by 1. Its upper end is reduced, forming a shoulder2, on which the split collar 3, embracing the said reduced upper end ofthe shell, rests. The ends of the split collar 3 extend outwardly andupwardly and form the lower half-bearing 4 for holding thefeed-operating shaft in position. A bolt 5, extending through the partsof the split collar, is provided with a nut 6 for drawing the partstogether to clamp the collar to the shell or permitting the parts toseparate to loosen the collar and admit of its being rotated on theshell.

The feed-operating shaft is denoted by 7, and the upper half-bearing,which coacts with the lower half-bearing 4 to hold the shaft inposition, is denoted by 8. The shaft7is provided with an operating-crank9 on its outer end and with a bevel-faeed pinion 10 on its inner end.

The feed-screw is denoted by 11. It has an annular shoulder 12, whichabuts against a seat 13 on the shell, and the cylindrical head 14 of thefeed -screw extends upwardly through the reduced portion of the shelland a considerable distance above the upper end of the shell, where itsend is provided with a screw-thread 15 for the reception of anadjusting-nut 16 and a lock-nut 17.

The upper end of the shell is provided with an annular recess 18 aroundits bore, and in said recess a pile of washers is located. These washersare preferably made of different metals-steel and gun-metal, forinstance-the steel washers 19 being arranged alternately with thegun-metal washers 20.

Above the pile of washers 19 20 there is located a sleeve 21, its lowerend resting on the pile of washers and its upper end provided with a cap22, on which the adjustingnut16 bears. The sleeve 21 is connected torotate with the screw-head 14 by a spline 23, which permits the head 14to move longitudinally within the sleeve independently of the sleeve,and the bevel gear-wheel 24, in mesh with the pinion 10 for driving thefeed-screw,

is mounted on the sleeve 21 and connected to rotate therewith by aSpline 25, which permits the wheel 24 to move endwise without affectingthe sleeve.

Between the wheel 24 and the upper end of the shell there is interposeda washer 26, which may be renewed whenever it becomes Worn. The washer26 also separates the wheel 24 from the upper end of the split collar 3.

Between the cap 22 and the wheel 24 there is interposed a spring 27,which holds the wheel 24 seated on the washer 26, while the hammeringaction of the feed-screw 11, transmitted to it from the action of thedrill, will be taken by the pile of washers 19 20, the sleeve 21 and itscap 22, and the nuts 16 17, thus relieving the bevel-gear from anysevere strain and materially extending its life, as well as saving theloss of time in renewing a broken wheel. Furthermore, the veryconsiderable wear on the collar 12 and face 13 and on the bottom of thesleeve 21 under the continual running of the machine may be taken up bysimply screwing down the nuts 16 17 without affecting'the meshing of thegears 10 and 2.4.

The operating-crank 9, together with the shaft 7 and split collar 3, maybe rotated about the upper end of the shell by loosening the bolt 5, thepinion 1O traveling along the wheel 24 idly, thus providing for thelocation of the said crank where it will best suit the operator or theconditions.

\Vhat I claim is- 1. The combination with the shell and feedscrew, ofgear connected with the feed-screw, driving-gear carried by the shelland means for adjusting the driving-gear in dili'erent radial positionswith relation to the axis of the feed-screw.

2. The combination with the shelland feedscrew, of driving-gear andmeans for adjusting the driving-gear on the shell in different radialpositions with relation to the axis of the feed-screw.

3. The combination with the shell and the feed-screw, of driving-gear, asupport for the driving-gear, said support being mounted on the shell inrotary adjustment and means for locking the support to the shell.

4. The combination with the shell and the feed-screw, of a split collarmounted in rotary adjustment on the shell, drivinggear carried by saidsplit collar and means for clamping the collar to the shell.

The combination with the shell and the feed-screw, ot' a gear-wheelconnected to rotate with the feed-screw, the said feed-screw being freeto reciprocate longitudinally independently of the gear-wheel, and meansfor driving the gear-wheel and hence the feedscrew.

6. The combination with the shell and the feed-screw, of a sleevesplined to the feedscrew, a gear-wheel mounted on and splined to thesleeve, means for holding the gearwheel yieldingly in position and meansfor driving the gear-wheel.

7. The combination with the shell and the feed-screw, of a nut forlocking the feedscrew to the shell, a sleeve interposed between the nutand the end of the shell and connected to rotate with the feed-screw, agear-wheel mounted on the sleeve and connected to rotate with the sleeveand means for operating the gear-wheel.

8. The combination with the shell and the feed-screw, the shell beingprovided with a pile of washers in its end, of asleeve connected withand surrounding the head of the feedscrew and bearing on the pile ofwashers, a nut bearing on the said sleeve and operatinggear connectedwith and surrounding the said sleeve.

9. The combination with the shell and the feed-screw, of a nut on thefeed-screw, a sleeve connected with the feed-screw and interposedbetween the shell and the nut on the feed-screw and provided with a cap,a gearwheel connected with and mounted on the sleeve, a springinterposed between the gearwheel and the cap on the sleeve and means foroperating the gear-wheel.

10. The combination with the feed-screw, its driving mechanism includingintermeshing gear and a support for the driving mechanism, carried bythe feed-screw, of means for taking up wear between the feed-screw andsaid support without disturbing the relative positions of theintermeshing gear.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 26th day of August, 1904.

WILLIAM PRELLIVITZ.

itnesses:

WVARD RAYMOND, RUsseLL IVILHELu.

